Door or window handle



FIG. 1 is a top plan view of a door or window handle showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a first end view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a second end view thereof; and,

FIG. 6 is a perspective view thereof. 

The ornamental design for a door or window handle, as shown and described. 